Hiro is a small yet powerful unit testing framework for JavaScript. It runs each test suite in a separate iframe sandbox, preventing global state leaks and conflicts.
Blackbird offers a dead-simple way to log messages in JavaScript and an attractive console to view and filter them. You might never use alert() again.
A Javascript CSS3 Selector and Matcher not using XPath
nice
"Responsive web design is about a lot more than the size of your screen. This talk is about about how GitHub handles links, the url bar, partial page updates, and explains why I think the HTML5 history API is the most important thing to happen to front end development since Firebug."
CSS-like selectors for JSON.
PathJS is a lightweight, client-side routing library that allows you to create "single page" applications.
Lightweight alternative to sammy.js